Adjustable journal-bearing



J. MURRIN AND E. J. BREWSTER.

ADJUSTABLE JOURNAL BEARING.

APPLICATION FILED SEPT- 26, 1919.

1,342,059.. Patented June 1, 1920.

- UNITED STATES PATENT OFFICE.

ADJUSTABLE JOURNAL-BEARING.

Specification of Letters Patent.

Patented June 1, 1920.-

Application filed September 26, 1919. Serial No. 326,558.

To all whom it may concern:

Be it known that we, J OI-IN MURRIN and ELMER J. Bnnws'rnn, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Adjustable J ournal-Bearings, of which the following is a specification.

Our invention relates to improvements 1n journal bearings used in the locomotive driving boxes on all axles of locomot ve engines, and it consists in certain peculiaritles of the construction, novel arrangement, combination and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

The principal object of the invention is to provide a journal bearing of the above mentioned general character, which shall be simple and inexpensive in construction, strong, durable and highly eificient 1n operation, with its parts so made and operatively arranged that they can be readlly and suitably adjusted in order to take up or compensate for the wear thereof incident to continuous usage, and particularly the Wear in the horizontal direction, which as is well known to engineers, causes pounding of the axles in the main driving boxes.

Another object is to provide an adjustable journal bearing which can be readily fitted to or used in connection with the driving boxes on the axles of locomotives of the usual or well known construction now and heretofore in general use, without removal of the same from their mountings on the frame of the engine, and with but slight alteration to the bearing surfaces of said boxes.

Other objects and'advantages of the invention will be disclosed in the following description and explanation.

In the accompanying drawing which serves to illustrate an embodiment of the invention- Figure 1 is a plan view of a driving box equipped with a journal bearing of our improved construction showing a portion of an axle of a locomotive positioned in said bearing and illustrating a portion of a driving wheel mounted on said axle.

Fig. 2 is an inner face view of the driving box and bearing.

Fig. 3 is a central sectional view through the box and bearing taken on line 3-3 of Fig. 1 looking in the direction indicated by the arrows.

Figs. 1 and 5 are detached perspective views of tapered keys used for adjusting certain members of the bearing, and

Fig. 6 is a fragmental perspective view of the driving box showing the construction of the bearing surface thereof.

Like numerals of reference refer to like parts throughout the different views of the drawing.

The reference numeral 8 designates, as a whole, the driving box which may, in, general, be of the ordinary or well known constructlon, such as those used on the main axles of locomotive engines, and said box may be supported by any suitable means or in the usual manner on the frame of the enently explained. The lower portion 0 the opening 10 communicates with an oil cellar in the usual manner.

As is clearly shown in Figs. 2, 3 and 6 of the drawing, a segmental crown piece 12 of brass is located in the curved bearing or recess 9 of the driving box and the edges of the piece or crown 12 terminate by preference a slight distance above a horizontal line drawn diametrically through the axle or journal 11. The wall of the opening 9 is provided with diametrically opposed recesses 13 which are by preference rectangular in shape and are for the reception and operation of adjusting keys 14, one of which is located in each of said recesses, as will be readily understood by reference to: Figs. 1, 2 and 3 of the drawing.

Each of the keys 14 is provided at one of its ends with a lateral extension or head 15 and is tapered from said head to its other end as is clearly shown in Fig. l of the drawing. Each of the extensions or members 15 is provided with an opening 16 for the reception of screw bolts 17 which are m iii-l tapped in suitable openings in the inner face of the box 8 and project horizontally therefrom on a horizontal diametrical line through. the axle or journal 11, see Fig. 2 of the drawing.

The oox 8 is provided at about the mid dle thereof with an ope'iiug or recess 156, which is extended radially :lroni the inner surface of? the hearing surlace l) outwardly a short distance in the has; and is tor the reception of one end oi? a pin l the ot ier end of which is located in a radially s posed opening 90 in the periphery oi 11c crown piece 12 ahout midway between its ends and side edges.

At about midway between the ends of each of its side edges the crown piece it is provided with a transversely extended seinicircular opening 21, each of which is adagt ed to register with a similarly termed recess 912 located trai'isversely in the upper surface of each oi the adjustable quarter brasses or pieces 23 at about midway between their ends, which pieces are suhsta tially rectangular in cross-section and are of sullicient length to extend from one end. ol the hearing opening 9 to the other end thereof and as shown in 2, are located one on each side of the journal or axle 11 with their upper surfaces in contact with the lower portions of the crown piece 12.

It will be further understood that the quarter hrasses or pieces 23 are located inwardly of the keys let, and are o't' somewhat greater width than said keys and the recesses 1.3, in whichthe keys are located. it will also he not d that the inner surface of each of the members is provided with an are 24 which extends from the upper surface oil said member downwardly to a point slightly helow a horizontal. line drawn dian'ietrically through the axle.

Just below each of the recesses iii in the wall of the hearing opening 5), said wall is provided with another recess 25, (see l ig. (3) which is for the reception of tapered locking keys 26, one of which is located in each of the recesses 25 below the quarter brass 23 therein, and, in contact with the lower surface oi said brass piece or meniher, as is clearly shown in Fig. 3 of the drawing. Each of the keys fl t) is provided at one oi its ends with a head or lateral extension 2?, which has an opening 28 for the reception oi a screw bolt 2! which are tapped in suitable openings in the inner face of the hex 8 and extend horr/Jontally therefrom just below the recesses 25 in the hearing opening or surit'ace o'l' said hex.

lransversely located in. the recesses 2t and 22 of the crown piece 12 and quarter pieces 23 respectively, are pins :21 which will prevent longitudinal movement said menibers with respect to one another when the adjustment of said pieces by means the tapered .lceys tales place. lit also obvlous that the pin ll) engaging the recess of the box 8 and the recess .20 in the periphery oi the crown piece will prevent longitudinal or lateral movement thereof.

Each of the screw bolts 1.? has mounted thereon a pair ot nuts ill) and ill to engage the extensions or heads l5 ol' the tapered keys llwhich heads are l(')(J2Ii C'(l. between said nuts as is clearly shown in l ig. 1. of the drawing. By this arrangement, it is apparent that as wear of the parts of the hearing and the joi'irnal takes place, the same can be taken up by moving the keys Lil in the proper directions, where the keys 'l-ilmay he fixedly held by means of the nuts 30 and 31 which can be properly adjusted to clamp the heads 15 out said keys. lit is also obvious that the key.) may be held in proper position by means of the nuts 32, one of which is mounted on each of the screw bolts 29 for this purpose, and that said keys 26 will. thereby lock the members 23 in place.

While we have shown the crown piece 12 provided in its jieriphery with a recess 20 and the box 8 with a recess 18 to register with. the recess 20, and for the reception of a pin 19 to hold the crown piece in the hex against longitudinal or lateral movement, and while we have shown the lower edges oi the crown piece provided with transversely extended recesses 21 and the quarter pieces 28 with transversely extended rccesses 22 to register with the recesses 21, and for the reception of pins 21 to hold the quarter pieces against longitudinal movement with respect to the crown piece, yet we do not desire to he limited to the above means of connecting said members or ele ments, as we may employ any other desirable means for such purpose without departing from the spirit of our invention.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent is 1. In an adjustable journal bearing, the c nnbination with a box provided with a hearing opening for the journal. and having in the walls of said opening a pair of opposed recesses diametrically and horizontally disposed with respect to the journal said bearing opening also having in each Git its lateral walls a recess located below each of the first named recesses, of a mental crown piece located in the upper portion oil said hearing opening, a quarter piece located in contact with the lower surface oil each side 0? said crown piece and inwardly of each oi the first named recesses, a lockable tapered hey adjustahly located in each of the recesses at the outer surfaces of said quarter pieces and a tapered key lockahly located in each of the recesses below the quarter pieces.

ill)

2. In an adjustable journal bearing, the combination with a box provided with a bearing opening for the journal and having in the walls of said opening a pair of opposed recesses diametrically and horizontally disposed with respect to the journal, said bearing opening also having in each of its lateral walls a recess located below each of the first named recesses, a segmental crown piece located in the upper portion of said bearing opening, a quarter piece located in contact with the lower surface of each side of said crown piece and inwardly of each of the first named recesses, a screw bolt mounted on one of the faces of the box and extended horizontally therefrom near each of the first named recesses, and a screw bolt mounted on the box and extended each of said keys having an apertured lateral extension engaging said screw bolts, and means on said bolts for holding said keys in their adjusted positions.

In witness whereof we have hereunto signed our names at Chicago, Illinois, on 30 this the 23d day of September, 1919.

JOHN MURRIN. ELMER J. BREl/VSTER. lVitnesses F. J. RAVLIN, ERWIN H. C. FREITAG. 

